AUSTIN — One of the largest donors to Gov. Greg Abbott and Lt. Gov. Dan Patrick pleaded guilty two years ago to a domestic violence charge that included an accusation he choked a woman into unconsciousness.

After The Dallas Morning News questioned the leaders about the conviction last week, they separately said they were donating a combined $702,600 — the amount Grand Prairie developer Marcus Hiles had given to their two campaigns — to services for abuse victims throughout Texas.

Aides said they were unaware that Hiles had pleaded guilty in 2013 to an assault in Las Vegas. Both Abbott and Patrick had also appointed Hiles to advisory positions.

“At no point in time was Governor Abbott or any member of his staff aware of this deeply disturbing incident,” said the governor’s press secretary Amelia Chasse. “Governor Abbott believes that any violence against women is deplorable, unacceptable and shameful.”

Hiles did not return multiple messages left at his office or respond to an email request for comment. His attorney, Lawrence Friedman, said that his client disputes the police version of the incident and was the victim of an effort to extort money from a wealthy man. Hiles, he said, pleaded guilty to a misdemeanor to avoid the risk of going to trial on a felony.

“He did not hit her. He did not touch her,” Friedman said.

“To be a victim of domestic violence is horrible. Also horrible is being falsely accused of being the perpetrator of domestic violence,” he said. “Marcus Hiles is the victim.”

In addition to returning the campaign contributions, Patrick said that he had received Hiles’ resignation from the lieutenant governor’s Tax Policy Advisory Board.

“I take the issue of violence against women seriously,” Patrick said.

The campaigns’ quick actions once informed of the incident show the risk politicians take in sweeping in millions of dollars in campaign contributions from thousands of individuals. In Texas, there are no legal limits on contribution amounts.

Hiles, chairman and chief executive at Western Rim and Mansions Custom Homes, is a residential real estate developer. He and his wife have been major Republican donors in state and federal campaigns.

He had given Abbott $525,000 in the past 14 months for his run for governor. Hiles was Abbott’s third-largest contributor and was among the 40 individuals and couples that Abbott named to the prestigious 2015 Texas Inaugural Committee, which oversaw the swearing-in ceremonies and celebrations for Abbott and Patrick last month.

Hiles also gave $150,000 to Patrick in the past five months and had been named last month to the lieutenant governor’s advisory board.

The assault occurred Oct. 12, 2012, after a night of drinking, according to a Las Vegas police report. The woman told police that she left his side for a while at a nightclub and he was “upset at her leaving.”

A fight began at the club and continued during a cab ride, she told police. On the ride, she said, he slapped her and she hit him back, causing a cut on his nose.

At the Wynn hotel where they were staying, videotape showed they continued to slap and shove each other as they walked through the casino, according to police.

The reports cite a hotel elevator video showing that when the woman tried to make a call, the two struggled over her cellphone until Hiles threw the woman “to the floor and began stomping the phone.” The video, parts of which were viewed by The News, shows Hiles trying to take the phone away and in the tussle, pushing her to the floor.

The woman reported that once they were in their hotel room, Hiles punched her, dragged her by the hair and then choked her into unconsciousness. She told police she thought she was going to die.

When she came to, she reported that she ran from the room and notified security.

The police report notes that Hiles said it was the woman who jumped on top of him, punched him and knocked him out.

The police officer wrote that Hiles’ version of the story was not consistent with his injuries, while the woman suffered marks on her neck, swelling and reddened eyes, a hoarse voice, a torn-off fingernail and scratches throughout her body.

He was charged with both misdemeanor battery and felony domestic violence causing substantial bodily harm. In February 2013, the court agreed to reduce the charges to a single misdemeanor domestic violence, to which he pleaded guilty.

He was placed on probation, which he completed, court records show. Hiles also received counseling and performed 35 hours of community service before the case was closed in September 2013, the records show.

In a subsequent lawsuit, Hiles contended that the woman — a 29-year-old dancer he met in January 2012 at a Dallas gentleman’s club — had filed similar complaints against other men and that her motivation was to extort $10 million from him. He stated in the suit he had purchased a $160,000 Bentley for the woman, lent her $150,000 in cash and bought her expensive jewelry.

That lawsuit and a countersuit she filed against Hiles were both dismissed, Friedman said. No money changed hands, he said.

He said Hiles “just got himself in a very unfortunate situation, in the wrong place at the wrong time. That’s something that never should have happened. It’s not a reflection of who he is.”

Hiles accepted the misdemeanor plea because “he was unwilling to risk the severe consequences for allegations of domestic violence in Las Vegas that carried with it a 25-year prison sentence, and instead opted for a certain result — probation and no jail time,” Friedman said.

He said his client had not discussed the incident with either the Abbott or Patrick campaigns.

Abbott donated the money he had received from Hiles to 10 women’s shelters and family crisis centers around the state. Patrick said that his staff was researching which organizations to donate the money to but that it would be sent in the next few days.